infatuated used in The Mill on the Floss

What infatuation is it, what obstinate prepossession, that blinds you to that?

6.14 -- Book 6 Chapter 14 -- Waking (76% in)

Mr. Stephen Guest had certainly not behaved well; but then, young men were liable to those sudden infatuated attachments; and bad as it might seem in Mrs. Stephen Guest to admit the faintest advances from her cousin's lover (indeed it had been said that she was actually engaged to young Wakem,—old Wakem himself had mentioned it), still, she was very young,—"and a deformed young man, you know!